DDJ-SZ2 - Sampler audio output coming through headphones

With the Sarato SP6 output set to master and the master cue off. If i, have either deck 1-4 cued i can hear the output of the sample .... supper annoying. 

Side note if i trigger pioneers onboard sampler i don't hear it in the headphones.

Any help will be greatly appreciated. Thanks in advance.